AU2012374020A1 - Implantable medical device antenna - Google Patents

Implantable medical device antenna Download PDF

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Publication number
AU2012374020A1
AU2012374020A1 AU2012374020A AU2012374020A AU2012374020A1 AU 2012374020 A1 AU2012374020 A1 AU 2012374020A1 AU 2012374020 A AU2012374020 A AU 2012374020A AU 2012374020 A AU2012374020 A AU 2012374020A AU 2012374020 A1 AU2012374020 A1 AU 2012374020A1
Authority
AU
Australia
Prior art keywords
antenna
medical device
implantable medical
case
dielectric material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
AU2012374020A
Other versions
AU2012374020B2 (en
AU2012374020A9 (en
Inventor
Eric Y. Chow
Himanshu Joshi
Clint B. Warren
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Livanova USA Inc
Original Assignee
Cyberonics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US13/098,279 external-priority patent/US9259582B2/en
Application filed by Cyberonics Inc filed Critical Cyberonics Inc
Publication of AU2012374020A1 publication Critical patent/AU2012374020A1/en
Application granted granted Critical
Publication of AU2012374020B2 publication Critical patent/AU2012374020B2/en
Publication of AU2012374020A9 publication Critical patent/AU2012374020A9/en
Ceased legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00Electrotherapy; Circuits therefor
    • A61N1/18Applying electric currents by contact electrodes
    • A61N1/32Applying electric currents by contact electrodes alternating or intermittent currents
    • A61N1/36Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
    • A61N1/372Arrangements in connection with the implantation of stimulators
    • A61N1/37211Means for communicating with stimulators
    • A61N1/37217Means for communicating with stimulators characterised by the communication link, e.g. acoustic or tactile
    • A61N1/37223Circuits for electromagnetic coupling
    • A61N1/37229Shape or location of the implanted or external antenna
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00Electrotherapy; Circuits therefor
    • A61N1/18Applying electric currents by contact electrodes
    • A61N1/32Applying electric currents by contact electrodes alternating or intermittent currents
    • A61N1/36Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
    • A61N1/372Arrangements in connection with the implantation of stimulators
    • A61N1/375Constructional arrangements, e.g. casings
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/27Adaptation for use in or on movable bodies
    • H01Q1/273Adaptation for carrying or wearing by persons or animals
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/36Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/52Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/521Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/10Resonant slot antennas
    • H01Q13/106Microstrip slot antennas
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00Antenna arrays or systems
    • H01Q21/06Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/08Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00Antenna arrays or systems
    • H01Q21/06Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/20Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a curvilinear path
    • H01Q21/205Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a curvilinear path providing an omnidirectional coverage
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00Antenna arrays or systems
    • H01Q21/30Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04Resonant antennas
    • H01Q9/0407Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/045Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00Electrotherapy; Circuits therefor
    • A61N1/18Applying electric currents by contact electrodes
    • A61N1/32Applying electric currents by contact electrodes alternating or intermittent currents
    • A61N1/36Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
    • A61N1/372Arrangements in connection with the implantation of stimulators
    • A61N1/378Electrical supply
    • A61N1/3787Electrical supply from an external energy source
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49002Electrical device making
    • Y10T29/49016Antenna or wave energy "plumbing" making
    • Y10T29/49018Antenna or wave energy "plumbing" making with other electrical component

Landscapes

  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Animal Behavior & Ethology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Acoustics & Sound (AREA)
  • Electrotherapy Devices (AREA)

Abstract

An implantable medical device includes a case having a conductive housing defining an opening. A dielectric material is coupled to the conductive housing to hermetically seal the opening. An antenna is within the case under the dielectric material. A header block is coupled to the case over the dielectric material.

Description

WO 2013/141884 PCT/US202/032007 [0087] Moreover, although specific embodiments have been illustrated and described herein, it should be appreciated that any subsequent arrangement designed to achieve the same or similar results may be substituted for the specific embodiments shown. This disclosure is intended to cover any and all subsequent adaptations or variations of various embodiments. Combinations of the. above emboduients, and other embodiments not specifically described herein, will be apparent to those of skill in the art upon reviewing the description. [00881 The Abstract of the Disclosure is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. In addition, in the foregoing Detailed Description, various features may be grouped together or described in a single embodiment for the purpose of streamlining the disclosure. This disclosure is not to be interpreted as reflecting an intention that the claimed embodiments require more features than are expressly recited in each claim. Rather, as the following claims reflect, the claimed subject matter may be directed to less than all of the features of any of the disclosed embodiments. - 27 -

Claims (22)

1- An implantable medical device comprising: a case including a conductive housing defining an opening; a dielectric material coupled to the conductive housing to hermetically seal the opening; an antenna within the case under the dielectric material; and a header block coupled to the case over the dielectiic material.
2. The implantable medical device of claim 1, wherein the header block comprises a polymer material, the dielectric material comprises a ceramic material, and the conductive housing comprises a metal or metal alloy materiaL
3. The implantable medical device of claim 1. wherein the header block is formed of a first material that has a first mechanical failure mechanism when implanted within a patient and the dielectric material is formed of a second material that has a second mechanical failure mechanism when implanted within the patient.
4. The implantable medical device of claim 3, wherein the second material is more brittle at body temperature than the first material.
5. The implantable medical device of claim 1, wherein the header block is configured to retain pieces of the dielectric material in event of a catastrophic failure of the dielectric material.
6. The implantable medical device of claim 1, wherein at least one dimension of the opening is larger than a corresponding dimension of a radiating element of the antenna. -28 - WO 2013/141884 PCT/US2012/032007
7. The implantable medical device of claim 1, further comprising an insulating layer between the antenna and an interior of the conductive housing.
8. The implantable medical device of claim 1, wherein the antenna is a planar antenna comprising one or more conductive elements disposed on a circuit board within the case.
9. The implantable medical device of claim 1, further comprising communication circuitry within the case and coupled to the antenna, the communication circuitry operable to at least one of: send a first signal to a device external to the case; and receive a second signal from the device external to the case.
10. The implantable medical device of claim 9, wherein the antenna is a slot-type antenna including a conductive layer on a surface of a circuit board, the conductive layer defining a radiating slot.
11. The implantable medical device of claim 10, wherein at least one dimension of the opening is larger than a corresponding dimension of the radiating slot.
12. The implantable medical device of claim 10, further comprising a second antenna, wherein the second antenna is arranged to receive a second signal that propagates through the opening and through the radiating slot of the antenna.
13- The implantable medical device of claim 12, wherein the conductive layer of the antenna is coupled to a first side of the circuit board and the second antenna is coupled to a second side of the circuit board, the second side opposite the first side. -29- WO 2013/141884 PCT/US2012/032007
14. The implantable medical device of claim 12, further comprismg wake-up circuitry within the case and coupled to the second antenna, wherein the wake-up circuitry is operable, in response to the second signal received at the second antenna, to cause the communication circuitry to transition from a sleep state in which the communication circuitry is inactive to an awake state in which the communication circuitry is active.
15. The implantable medical device of claim 1, further comprising medical circuitry within the case, the medical circuitry including at least one of therapeutic circuitry and sensing circuitry, wherein the header block includes one or more'lead interface blocks connected to the medical circuitry and wherein the one or more lead interface blocks at least partially obscure the antenna.
16. The implantable medical device of claim 1, wherein the case has a first side and a second side opposite the first side, wherein the first side has a recessed portion and a non recessed portion, wherein a first distance between the second side and the recessed portion of the first side is smaller than a second distance between the second side and the non-recessed portion of the first side, and wherein the antenna is positioned between the second side and the recessed portion of the first side.
17. The implantable medical device of claim 16, wherein the header block extends from the recessed portion of the first side to approximately flush with the non-recessed portion of the first side. -30- WO 2013/141884 PCT/US2012/032007
18. A method comprising: positioning an antenna in a portion of a case of an implantable medical device, the case including: a conductive housing that defines an opening; and a dielectric material coupled to the conductive housing to hermetically seal the opening, wherein the antenna is positioned under the dielectric material; hermetically sealing the case; and coupling a header block to the case over the dielectric material.
19. The method of claim 18, further comprising coupling the antenna to communication circuitry within the case before hermetically sealing the case
20. The method of claim 18, wherein the header block includes one or more lead interface blocks and the method further comprises: coupling the one or more lead interface blocks to corresponding one or more hermetically sealed feedthroughs that extend through the case; and coupling the one or more hermetically sealed feedthroughs to at least one of stimulation circuitry and sensing circuitry within the case. -31- WO 2013/141884 PCT/US2012/032007
21. A method comprising: receiving a signal at a first antenna that is hermetically sealed within an implantable medical device, wherein the implantable medical device comprises: a case including a conductive housing defining an opening and a dielectric material coupled to the conductive housing to hermetically seal the opening; and a header block over the dielectric material, wherein the first antenna is positioned within the case under the dielectric material and under the header block; and performing an action at the implantable medical device in response to the signal.
22. The method of claim 21, further comprising, before receiving the signal: receiving a wake-up signal at a second antenna that is hermetically sealed within the implantable medical device, wherein the first antenna is a slot-type antenna including a conductive layer defining a radiating slot, and wherein the wake-up signal propagates through the opening and through the radiating slot of the first antenna to be received at the second antenna; and in response to the wake-up signal, switching communication circuitry of the implantable medical device from a sleep state in which the communication circuitry is inactive to an awake state in which the communication circuitry is operable to receive the signaL -32.-
AU2012374020A 2011-04-29 2012-04-03 Implantable medical device antenna Ceased AU2012374020B2 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US13/098,279 2011-04-29
US13/098,279 US9259582B2 (en) 2011-04-29 2011-04-29 Slot antenna for an implantable device
US13/328,241 2011-12-16
US13/328,241 US9265958B2 (en) 2011-04-29 2011-12-16 Implantable medical device antenna
PCT/US2012/032007 WO2013141884A2 (en) 2011-04-29 2012-04-03 Implantable medical device antenna

Publications (3)

Publication Number Publication Date
AU2012374020A1 true AU2012374020A1 (en) 2013-11-14
AU2012374020B2 AU2012374020B2 (en) 2015-04-23
AU2012374020A9 AU2012374020A9 (en) 2015-04-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
AU2012374020A Ceased AU2012374020B2 (en) 2011-04-29 2012-04-03 Implantable medical device antenna

Country Status (6)

Country Link
US (1) US9265958B2 (en)
EP (1) EP2701797A2 (en)
JP (1) JP5789714B2 (en)
AU (1) AU2012374020B2 (en)
CA (1) CA2834386A1 (en)
WO (1) WO2013141884A2 (en)

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CA2834386A1 (en) 2013-09-26
US9265958B2 (en) 2016-02-23
US20120276856A1 (en) 2012-11-01
WO2013141884A3 (en) 2013-11-14
EP2701797A2 (en) 2014-03-05
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AU2012374020A9 (en) 2015-04-23
JP2014516642A (en) 2014-07-17

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